Up to date handheld devices have been developed enough in order to be used as platforms for Mixed Reality (MR). In the previous work, we have discussed incorporating a dynamic environment to offer better experience, which is verified as a new element for the field of digital elements. Providing users with more immersive and realistic experience, we have designed an agent system which regards agents as characters in a game to make them collaborate with each other. The characters are expected to behave more intelligently and naturally thanks to this advance.